Depends on your individual needs. I have a friend of my try to air up his 37’s with a OBA and first it took like 45 minutes to air up three and then the OBA overheated. If you have a shit loads of things to air up, then you should be thinking what system you’ll need before you take the trip. But for me to air up my stock tires on my ‘17 Raptor from 15 lbs to 35 lb there’s no problems and with air to spare. I suggest go on both website and check out what your needs are and compare. I also help my buddy air up his tire when he got a flat about 200 yards form where I was, I just grabbed my air tank and walked to him, with a OBA, you’re stuck unless he take off the tire and roll it to the OBA. You could also carry two tanks of air too.